well what can I say about this show, I bought both seasons, watched each I don't remember how many times and still hoping to hear something about a third season. as for favorite Sekirei that's a tough choice to make.

I enjoyed it a lot. Would definitely not mind a season 3. I am going to start reading the manga soon.

On side note:
It is interesting to me that everyone loves Tsukiumi. She is voiced by my favorite VA in Inoue Marina. Who also happens to voice others like:
Rei in Highschool of the Dead
Natsuru in Kampfer
Chiffon in Freezing
Kyouko in Skip Beat
and presently:
Tohka in Date a Live
Armin in Attack on Titan

Oh my goodness dude, are you serious the person who voiced tsukiumi also voices admin too !!!. That is another anime I adore, I never expect this :D.

I enjoyed it a lot. Would definitely not mind a season 3. I am going to start reading the manga soon.

On side note:
It is interesting to me that everyone loves Tsukiumi. She is voiced by my favorite VA in Inoue Marina. Who also happens to voice others like:
Rei in Highschool of the Dead
Natsuru in Kampfer
Chiffon in Freezing
Kyouko in Skip Beat
and presently:
Tohka in Date a Live
Armin in Attack on Titan

The English voice actress for Tsukiumi, Lydia Mackay, also did a great job voicing her. Marina Inoue also voiced Yozora in Haganai and Yoko in Gurren Lagann.

I have a soft spot in my heart for harem (and "reverse" harem) anime (not that I like every harem anime), and I like Sekirei. It was entertaining and I liked the relationships and the action. It's mostly good stupid fun, and I wasn't expecting anything more. As is sometimes the case in harem anime, there was that one character who's especially possessive/jealous and that always bugs me a little, but overall everyone got along, and that's a plus.